Unless you have wounds or broken skin on your scalp, hair dye is fine, just do a test before as hormones might make you slightly more sensitive to chemicals but it won't harm baby
You should wait till 12 weeks till dying your hair apparently. However my roots were awful so two weeks before I done mine but saw no problems
Not until the 2nd trimester for hair idk about nails
During my first pregnancy I had my hair colored towards the end of my second trimester. My hair stylist used ammonia free hair dye. It didn't have a scent at all. Right now I need it bad, but have decided to wait until my second trimester. I'm 9 wks 5days, so I just have to wait a couple more weeks.
I highlight my hair. I did during my first two pregnancies and I just had my hair done a week ago. I'm 9 weeks along. I can't say it's safe but I've broken the rules and done it without issues. Good luck!
Many ppl have told me nails also have chemicals that are unsafe while pregnant.. so now I don't know
I don't see why nails would be an issue. I guess it's a case of reading the details on the hair dye box / talking to your hairdresser - just to make sure no nasty chemicals.